Firmware Version 2.0.3 for Canon’s 5D MARK II was released today on Canon’s Site ( The update incorporates five enhancements to the movie function and a fix to the manual sensor cleaning function of the EOS 5D Mark II camera (it fixes a phenomenon where communication between the camera and the attached lens is sometimes interrupted after manual sensor cleaning. It only affects units with Firmware Version 1.2.4.. If you have a MARK II, I highly recommend this firmware upgrade. Allow at least 20 minutes total time (from downloading the update to completion).